摘要
提出了钢管混凝土边框内藏钢板-钢撑组合剪力墙。为研究这种新型组合剪力墙的抗剪性能,在已有相关低矮剪力墙抗震性能试验基础上,进行了2个新的不同构造低矮剪力墙模型低周反复荷载试验。比较分析了两个试件的滞回特性、承载力、刚度、耗能和破坏特征,提出了抗剪承载力计算公式,计算与实测符合较好。研究表明:钢管混凝土边框,对墙体主斜裂缝发展有明显约束作用;不同构造剪力墙,墙体裂缝开展与损伤过程有明显差异;边框、钢板-钢撑和墙体的设计参数应合理匹配,以提高剪力墙的延性和抗震耗能能力。
A composite shear wall with concrete filled steel tube CFST boundary columns and concealed steel platesteel braces was proposed. Based on relative existing low- rise shear wall tests,two wall models with different constructions were tested under the cyclic loading so as to investigate the shear behavior of the new wall. The hysteretic property,load- bearing capacity,stiffness,energy dissipation capacity and failure modes of models are compared and analyzed. The mechanical model for calculating load- bearing capacity of the wall was proposed and the calculated results agree well with the measured values. Research shows that： the CFST boundary columns has the obvious restriction on the main diagonal crack developing of the wall; the crack and the damage process on the wall are significantly different for different models; the parameters of CFST boundary columns,steel plate- steel braces and the wall should be reasonably designed so as to improve the ductility and energy dissipation capacity of shear walls.
出处
《世界地震工程》
CSCD
北大核心
2014年第4期1-7,共7页
World Earthquake Engineering
基金
北京市自然科学基金(8122004)
国家"十二五"科技支撑计划课题(2012BAJ13B02)
关键词
钢管混凝土
内藏钢板-钢撑
低矮剪力墙
抗剪性能
承载力计算
concrete filled steel tube CFST
concealed steel plate-steel brace
low-rise shear wall
shear behavior
load-bearing capacity calculation
